Cell stack device, fuel cell module, fuel cell device, and method of fabricating cell stack device
a fuel cell and cell stack technology, applied in the field fuel cell devices, and cell stack devices, can solve the problems of gas channel pressure loss increase, power generation performance degradation, etc., and achieve the effects of improving power generation performance, power generation performance of fuel cell modules, and improving power generation performance of fuel cell devices
Active Publication Date: 2017-09-12
KYOCERA CORP
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- Description
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Benefits of technology
The present invention relates to a cell stack device that includes a plurality of fuel cells electrically connected to each other, arranged in groups. The average pressure loss values of the fuel cells in the groups increase sequentially, resulting in a uniform flow rate of reactant gas supplied to the fuel cells, and improved power generation performance. The fuel cell module includes the cell stack device and an auxiliary device, and the power generation performance of the fuel cell device is improved. The cell stack device is easy to fabricate and includes a simple design.
Problems solved by technology
This may degrade the power generation performance.
This may cause a problem in that a pressure loss increases in gas channels.
Method used
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Embodiment Construction
[0021]FIG. 1 includes views of an example of a cell stack device according to an embodiment, the views including view (a) that is a side view of a cell stack device 1 and view (b) that is an enlarged plan view of selected parts of the cell stack device 1 illustrated in view (a). In FIG. 1 and the other drawings, the same reference numerals denote the same elements.
[0022]The cell stack device 1 includes a cell stack 2 that includes a plurality of column-shaped fuel cells 3 electrically connected in series to one another. The fuel cells 3 are arranged with a current collecting member 4 disposed between any one of the plurality of fuel cells 3 and the adjacent fuel cell 3 of the plurality of fuel cells 3. Each of the fuel cells 3 illustrated in FIG. 1 includes an electrically conductive support body 13 having a flat section. The electrically conductive support body 13 includes a plurality of gas channels 14 therein and a pair of flat surfaces that oppose each other. A fuel electrode la...
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Abstract
[Object] To provide a cell stack device, the power generation efficiency of which is improved, and a fuel cell module and a fuel cell device that include the cell stack device.[Solution] A cell stack device 1 includes a cell stack 2 that includes a plurality of fuel cells 3 electrically connected to one another and arranged, the fuel cells 3 that each includes a gas channel through which a reactant gas flows. In the cell stack device 1, the fuel cells 3 of the cell stack 2 are provided in the form of fuel cell groups that each include an arbitrary number of the fuel cells 3. In the cell stack device 1, the fuel cell groups are arranged such that average pressure loss values of the fuel cells 3 of the fuel cell groups increase sequentially from a central portion to an end portion side in a fuel cell 3 arrangement direction. Thus, the power generation efficiency of the cell stack device 1 can be improved.
Description
TECHNICAL FIELD[0001]The present invention relates to a cell stack device that includes a plurality of fuel cells that are arranged, a fuel cell module, a fuel cell device, and a method of fabricating a cell stack device.BACKGROUND ART[0002]Nowadays, various fuel cell devices equipped with cell stacks are proposed as next generation energy (see, for example, Patent Literature 1). In such a cell stack, a plurality of fuel cells are electrically connected in series to one another. With the fuel cells, power can be obtained by using a fuel gas (hydrogen containing gas) and air (oxygen containing gas).[0003]Such a fuel cell device includes a cell stack device that includes the fuel cells that are arranged. The amount of reactant gas supplied to the fuel cells may vary between the fuel cells positioned at a central portion and end portions in a fuel cell arrangement direction. This may degrade the power generation performance. In particular, the temperature of the fuel cells positioned a...
Claims
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IPC IPC(8): H01M8/00H01M8/2425H01M8/24H01M8/0438H01M8/2465H01M8/04082H01M8/2475H01M8/124H01M8/1246
CPCH01M8/04201H01M8/04388H01M8/04395H01M8/04432H01M8/24H01M8/2425H01M8/2465H01M8/1246H01M8/2475H01M2008/1293Y02E60/50Y02E60/525Y02P70/56H01M8/243H01M8/2404H01M8/2484Y02P70/50
Inventor TAKAHASHI, NARUTOONO, TAKASHI
Owner KYOCERA CORP